Post-WWI $\times$ German Outflow$_{1910-20}$&      -0.038\sym{***}&      -0.029\sym{**} &      -0.037\sym{***}&      -0.017\sym{*}  \\
            &     (0.013)         &     (0.013)         &     (0.014)         &     (0.009)         \\
\\[-1.5em] \hline Observations&      10,353         &      10,353         &      10,353         &      10,353         \\
Counties    &       2,227         &       2,227         &       2,227         &       2,227         \\
Effect at mean outflow&      -0.013         &      -0.010         &      -0.013         &      -0.006         \\
Adj.\ R$^2$ &       0.845         &       0.888         &       0.833         &       0.659         \\
\\[-1.5em] \hline Controls&         Yes         &         Yes         &         Yes         &         Yes         \\
